6.3Medium

CVE-2026-45283Nextcloud: Files Lock app allows users to lock and unlock files of other users

nextcloud security-advisories Published: (5 months ago)

Description

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.2, and 33.0.0 to before 33.0.1, the files_lock app did not properly validate the ownership of files when processing DAV lock and unlock requests. An authenticated user could lock or unlock files belonging to other users by targeting their absolute WebDAV paths. Additionally, lock tokens were disclosed to unauthorized callers in error responses, allowing attackers to remove token-based locks placed by other users' client applications. It is recommended that the Nextcloud Server is upgraded to 32.0.2 or 33.0.1. It is recommended that the Nextcloud Enterprise Server is upgraded to 31.0.14.4 or 32.0.2 or 33.0.1

Weakness (CWE): CWE-287

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
nextcloud nextcloud server 32.0.0 – < 32.0.2
nextcloud security-advisories >= 32.0.0, < 32.0.2, >= 33.0.0, < 33.0.1

References and patches

CPE matches (NVD) (5)

  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:* ≥ 32.0.0 < 32.0.2
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:* ≥ 33.0.0 < 33.0.1
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 31.0.0 < 31.0.14.4
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 32.0.0 < 32.0.2
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 33.0.0 < 33.0.1